3947319426 has 32 divisors (see below), whose sum is σ = 8337288960. Its totient is φ = 1242450576.

The previous prime is 3947319391. The next prime is 3947319449. The reversal of 3947319426 is 6249137493.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21396 + ... + 91391.

It is an arithmetic number, because the mean of its divisors is an integer number (260540280).

Almost surely, 2^3947319426 is an apocalyptic number.

3947319426 is an abundant number, since it is smaller than the sum of its proper divisors (4389969534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3947319426 is a wasteful number, since it uses less digits than its factorization.

3947319426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113118.

The product of its digits is 979776, while the sum is 48.

The square root of 3947319426 is about 62827.6963289281. The cubic root of 3947319426 is about 1580.4014663735.

The spelling of 3947319426 in words is "three billion, nine hundred forty-seven million, three hundred nineteen thousand, four hundred twenty-six".